17 registers, 36 instructions:
0	r0 = uniform32 ptr0 4
1	r1 = uniform32 ptr0 8
2	r2 = uniform32 ptr0 C
3	r3 = uniform32 ptr0 10
4	r4 = uniform32 ptr0 14
5	r5 = uniform32 ptr0 18
6	r6 = uniform32 ptr0 1C
7	r7 = uniform32 ptr0 20
8	r8 = splat 0 (0)
9	r9 = splat FFFFFFFF (nan)
10	r10 = trunc r1
11	r8 = eq_i32 r8 r10
12	r11 = bit_and r4 r8
13	r12 = bit_and r5 r8
14	r13 = bit_and r6 r8
15	r14 = bit_and r7 r8
16	r15 = bit_xor r9 r8
17	r8 = bit_and r8 r15
18	r16 = splat 1 (1.4012985e-45)
19	r16 = eq_i32 r10 r16
20	r16 = bit_or r8 r16
21	r16 = bit_and r15 r16
22	r11 = select r16 r0 r11
23	r12 = select r16 r1 r12
24	r13 = select r16 r2 r13
25	r14 = select r16 r3 r14
26	r16 = bit_xor r9 r16
27	r16 = bit_and r15 r16
28	r11 = select r16 r4 r11
29	r12 = select r16 r5 r12
30	r13 = select r16 r6 r13
31	r14 = select r16 r7 r14
loop:
32	    store32 ptr1 r11
33	    store32 ptr2 r12
34	    store32 ptr3 r13
35	    store32 ptr4 r14